US9266452B2 - Vehicle vibration device for vehicle seats or vehicle cabs - Google Patents

Vehicle vibration device for vehicle seats or vehicle cabs Download PDF

Info

Publication number: US9266452B2
Authority: US; United States
Prior art keywords: lever arms; vehicle; swivel axis; lever; swivel
Prior art date: 2010-12-08
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Active

Application number

US13/312,193

Other languages

English (en)

Other versions

US20120145875A1 (en

Inventor

Erwin Haller

Jens Kolb

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Grammer AG

Original Assignee

Grammer AG

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

2010-12-08

Filing date

2011-12-06

Publication date

2016-02-23

2011-12-06 Application filed by Grammer AG filed Critical Grammer AG

2012-02-10 Assigned to GRAMMER AG reassignment GRAMMER AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HALLER, ERWIN, KOLB, JENS

2012-06-14 Publication of US20120145875A1 publication Critical patent/US20120145875A1/en

2016-02-23 Application granted granted Critical

2016-02-23 Publication of US9266452B2 publication Critical patent/US9266452B2/en

2021-01-07 Assigned to GRAMMER AG reassignment GRAMMER AG CHANGE OF ADDRESS Assignors: GRAMMER AG

Status Active legal-status Critical Current

2031-12-06 Anticipated expiration legal-status Critical

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Classifications

- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/50—Seat suspension devices
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
- B60N2/38—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles specially constructed for use on tractors or like off-road vehicles
- B60N2/39—Seats tiltable to compensate for roll inclination of vehicles
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/50—Seat suspension devices
- B60N2/502—Seat suspension devices attached to the base of the seat
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/50—Seat suspension devices
- B60N2/506—Seat guided by rods
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/50—Seat suspension devices
- B60N2/506—Seat guided by rods
- B60N2/507—Parallelogram-like structure
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/50—Seat suspension devices
- B60N2/52—Seat suspension devices using fluid means
- B60N2/522—Seat suspension devices using fluid means characterised by dampening means
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/50—Seat suspension devices
- B60N2/52—Seat suspension devices using fluid means
- B60N2/525—Seat suspension devices using fluid means using gas
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/50—Seat suspension devices
- B60N2/52—Seat suspension devices using fluid means
- B60N2/527—Seat suspension devices using fluid means using liquids

Definitions

the invention concerns a vibration device for vehicles, in particular a vehicle vibration device for a vehicle seat or a vehicle cab with a lower part and an upper part sprung mounted in relation to the lower part by means of at least one damper device according to the preamble of claim 1 .
Vehicle vibration devices in particular for vehicle seats, are formed such that they constitute an oscillating, sprung mounting between an upper part and a lower part, in this case between a vehicle seat part and a lower part of the vehicle seat subframe.
a vehicle seat with a seat part can be connected to a lower part, that is attached to the vehicle cab floor or body of the vehicle, by means of scissor arms, wherein between the upper part and the lower part additional springing devices and/or damping devices are arranged in order to absorb by springing a vertically directed vibration introduced from outside into the vehicle seat system.
Horizontal vibrations introduced into the system of the sprung vehicle seat or sprung vehicle cab frequently occur if a truck in which the vehicle seat or cab is arranged passes with its front wheels through a hollow or over a bump, and as a result the vehicle seat or vehicle cab briefly undergoes a braking or acceleration in the vehicle length direction in relation to the remainder of the vehicle. This is because, inter alia, the driver's weight is moved with a certain inertia, with a time delay or accelerated relative to the movement of the vehicle.
a purely horizontal excitation occurs preferably for example in the case of a rigid subframe (unsprung vehicle) and a horizontal thrust, for example of a trailer e.g. by the overrun brake.
Travelling over hollows and rocks with the front wheel preferably leads at least partly to a rotation movement about the contact point of the rear wheel with distance r (corresponds to the distance from the contact point to the seat surface). If the rear wheel then rolls over the unevenness, this also leads to a rotational movement about the contact surface or contact point of the front wheel.
This thrust is preferably largely absorbed by vertical springing as this is virtually above the excitation point or contact surface of the rear wheel.
a vehicle vibration device extending vertically in relation to the vehicle floor is provided between the vehicle seat upper part and the vehicle seat lower part.
damping devices can be installed in the vertical direction.
For the third degree of freedom (Y axis) in the vehicle width direction, vehicle vibration devices acting in the horizontal direction can be present.
the present invention is based on the object of providing a vehicle vibration device for a vehicle seat or vehicle cab which provides greater seating comfort for the person riding in the vehicle when passing through a hollow or over a bump.
One essential point of the invention is that in a vehicle vibration device for a vehicle seat or vehicle cab with a lower part and an upper part that is sprung mounted in relation to the lower part by means of at least one damper device, the upper part is mounted suspended on the lower part so that when vibrations occur between the upper part and the lower part, the upper part can swivel about a fictitious or real axis arranged below the upper part and extending in the vehicle width direction or vehicle length direction.
the suspended mounting of the upper part on the lower part and the possible swivel movement about a fictitious or real axis extending in the vehicle width direction or vehicle length direction and arranged below the upper part, can advantageously achieve that on passing through a pothole or over a bump, the pitching or tipping movement performed by the vehicle or a type of roll movement can be compensated by the vehicle vibration device.
the vehicle vibration device Insofar as the vehicle for example rides over a bump and thus the front wheels are deflected upwards, where simultaneously a brief braking occurs in the vehicle longitudinal direction i.e. the horizontal direction, a type of tipping or pitching movement of the vehicle occurs which could be compensated by the opposing swivel movement of the upper part and the lower part of the vehicle seat or vehicle cab.
This can be supported by damping and springing by means of the damping device and where applicable a further springing device, so that the tipping movement introduced can be damped out vibrationally.
the front wheel or front part of the vehicle When passing over a bump or rock, the front wheel or front part of the vehicle is thus preferably thrust upward, which can lead to a rotational movement of the vehicle about the contact surface of the rear tyre.
the mass inertia of the driver however tries to maintain the movement of the vehicle seat and driver himself translationally.
a rotational degree of freedom is helpful so that the driver is not forced up by the rotation of the vehicle due to the rising of the vehicle front part.
a fictitious or real axis about which the swivel movement takes place and which can also be the theoretical axis about which the vehicle body moves rotationally when driving over a bump or through a hollow By establishing a fictitious or real axis about which the swivel movement takes place and which can also be the theoretical axis about which the vehicle body moves rotationally when driving over a bump or through a hollow, such rotative degrees of freedom can be created.
a mechanical kinematic for performing a swivel movement according to these rotative degrees of freedom can be accommodated both on the vehicle side i.e. for example in the vehicle floor or vehicle cab floor, and on the seat side i.e. directly in the vehicle seat, so that a real axis or fictitious axis about which the swivel movement is executed is arranged in these parts.
the upper and lower parts are connected together by means of at least one first and one second swivel mounting.
first swivel mounting and the second swivel mounting each comprise at least one lever arm, the first end of which is swivellably mounted by means of a first swivel axis on the lower part and the second end of which is swivellably mounted by means of a second swivel axis on the upper part, wherein the second end lies above the first end.
the upper part is suspended on the lower part with lever arms hanging down or pointing obliquely down, wherein the lower part for example extends upward at the side to the left and right of the upper part or upward at the side in the front and rear areas of the upper part.
Such mounting insofar as produced with at least two swivel bearings, can execute a swinging movement in the sense of a rotational movement in relation to the fictitious or real axis, wherein advantageously the second swivel axis of the second swivel bearing can be moved within a curved track arranged on the lower part.
This curved track due to its curved form allows guided movement of the upper part i.e. the vehicle seat upper part or vehicle cab, on a rotation movement track, wherein the curvature of this curved track determines the position of the fictitious or real rotation point about which the vehicle seat can swivel.
the end of this arc-shaped curved track can determine the maximum possible swivel movement of the vehicle seat in relation to the rest of the vehicle when driving through a hollow or over a bump.
the arc-shaped form of the curved track can determine how lightly or heavily the upper part can move in its rotation movement in relation to a generated swivel movement of the remaining vehicle because of driving through the hollow or over the bump.
the vehicle seat can compensate for slight swivel movements of the vehicle not by a opposing controlled rotation movement, but on a strong deflection or swivel movement of the vehicle or pitching of the vehicle in which the second swivel bearing moves further into the end areas of the curve, which in this region has a different curvature, allows more readily an opposing rotation movement to compensate for the swivel movement of the rest of the vehicle.
a first swivel mounting is arranged firstly on upward extending side walls of the lower part in the region of the upper part at the front of the vehicle, and secondly on side attachments on the upper part arranged between the side walls on the left and right sides of the vehicle.
a second swivel bearing is arranged firstly on upward extending side walls of the lower part in the region of the upper part at the rear of the vehicle and secondly on side attachments on the upper part arranged between side walls on the left and right sides of the vehicle.
a vehicle seat of vehicle cab on which two front first swivel bearings and two rear second swivel bearings.
the vehicle seat or vehicle cab thus comprises a total of four swivel bearings which allow a rocking suspension of the vehicle seat upper part in relation to the vehicle seat lower part or the vehicle cab in relation to the remainder of the vehicle, in order to allow a rotation movement of the upper part to be provoked.
the first and second swivel bearings are arranged on the front and rear side walls of the lower part at the vehicle front and vehicle rear, and on the front and rear parts of the upper part, in order to perform a swivel movement in the vehicle width direction.
a rotation movement can be performed to compensate for the tipping movements in the vehicle width direction and in the width direction of the vehicle seat and/or vehicle cab.
a compensating rotation movement of the vehicle seat and/or vehicle cab is possible.
the swivel movement of the swivelling upper part can be subjected by means of a damper device to a damping force countering the swivel movement to damp the vibration, wherein the damper device is connected with at least one of the lever arms on one side and the lower part on the other.
a damper device can be coupled with a movement device which promotes the opposing rotation movement of the vehicle seat or vehicle cab against the rotation movement of the vehicle.
FIG. 1 in a diagrammatic depiction an extract of a truck with a vehicle seat according to a first embodiment of the invention
FIGS. 2 a , 2 b and 2 c in a diagrammatic depiction a vehicle seat according to the first embodiment of the invention in various swivel positions;
FIGS. 3 a and 3 b the vehicle seat according to the first embodiment of the invention in diagrammatic depiction with technical details, also in an extract view;
FIG. 4 in a perspective diagrammatic depiction the vehicle seat according to a further second embodiment of the invention.
FIGS. 5 a , 5 b and 5 c the vehicle seat according to FIG. 4 in a side view in various swivel positions;
FIG. 6 the vehicle seat in a partly reproduced cross section depiction according to the second embodiment of the invention.
FIGS. 7 a and 7 b the vehicle seat according to the second embodiment of the invention in a diagrammatic rear view
FIGS. 8 a , 8 b and 8 c the vehicle seat according to the second embodiment of the invention in diagrammatic view from the rear in various swivel positions oriented in the vehicle width direction.
FIG. 1 shows in a diagrammatic view an extract from a truck with a vehicle seat according to the first embodiment of the invention.
the extract from the truck 1 shows an indicated vehicle body 2 and a vehicle cab 3 in which the vehicle seat 4 according to the invention is arranged according to its first embodiment of the invention.
the vehicle seat 4 is arranged on a part 6 of the vehicle body.
the vehicle has a rear wheel 5 and a windscreen 7 .
a vehicle seat was conventionally equipped only with a conventional longitudinal horizontal springing as vehicle vibration device in addition to vertical springing. This allows only one degree of freedom in the X direction, i.e. the vehicle length direction, for shifting and sprung attenuation of the horizontally introduced vibration.
Such conventional longitudinal horizontal springing usually allows a movement of the vehicle seat to the front or rear on a corresponding short interruption or strong drive behaviour of the vehicle. This is shown by the double arrow 8 in the vehicle length direction.
a height adjustment of the vehicle seat and a vibration movement oriented exclusively in the vertical direction is shown by the double arrow at reference numeral 9 .
the vehicle seat 4 has a seat surface 4 a and a back rest 4 b which together form a vehicle seat upper part and are attached vibrating with the vehicle seat lower part 11 by means of two scissor arms not shown here in detail and placed within a gaiter 10 .
the vehicle seat lower part 11 has swivel bearings with first swivel axes 12 , 13 on which the vehicle seat upper part 4 a , 4 b is suspended, rocking and oscillating, by means of two swivel axes 14 and a further second swivel axis not shown here which is allocated to the first swivel axis 12 .
the second swivel axis 14 moves within an arc-shaped curved track 15 which by its course specifies the swivel movement or rotation movement of the vehicle seat upper part in relation to the vehicle seat upper part.
FIGS. 2 a , 2 b and 2 c show in a diagrammatic side view various swivel positions of the vehicle seat according to the invention in a first embodiment.
the vehicle seat 4 with its seat surface 4 a and back rest 4 b is shown in unswivelled position i.e. neither tipped forward nor backward.
the vehicle seat can be swivelled forward and back with swivel axes 12 , 13 , 14 and further elements described in connection with FIGS. 3 a and 3 b .
This swivel movement takes place automatically when the rest of the vehicle executes an opposite swivel movement because of unevenness of the road surface.
a vehicle drives over a bump with its front wheels so that the vehicle tips up in its front region.
the vehicle seat describes a rotation movement of its lower part 11 in relation to the vehicle seat upper part so that the vehicle seat upper part remains almost horizontal in its position.
This is indicated by the forward tilted head 19 of a vehicle seat user and the forward swivelled connecting line 17 between the head 19 , a pivot point 16 about which the swivel movement takes place—wherein this swivel point or swivel axis can be fictitious—and an SIP point (seat index point) 18 .
FIG. 2 a shows the forward deflection of the vehicle seat and FIG. 2 c the rearward deflection of the vehicle seat.
a swivelling of the vehicle seat takes place about swivel axis 16 which should be regarded as the virtual axis.
a head 19 is connected via a common line 17 with swivel axis 16 and SIP point 18 and shows that a deviation in the position of the person on the seat surface 4 a occurs in its angle from the vertical 20 .
This deviation exists when the vehicle passing through a hollow tips down in its front region or when passing over a bump tips up in the front region and as a result the vehicle seat in relation to the rest of the vehicle is either swivelled to the back in FIG. 2 c or to the front as in FIG. 2 a.
FIGS. 3 a and 3 b show technical details of the vehicle seat according to the first embodiment of the invention which is depicted in a side view together with an extract view in FIG. 3 b.
the swivel mountings which are arranged on the front and rear oriented in the trapezoid form shown and attached to the seat on both the left and right, comprise first swivel axes 12 and 13 and second swivel axes 23 , 14 .
the first swivel bearing in the front area with swivel axes 12 and 23 has a lever arm 21 which connects the two swivel axes 12 and 23 together.
the swivel axis 12 is swivellably mounted in a section of the lower part 11 of the vehicle seat, not shown in more detail because of the cross section view, and with a side component 51 of the seat upper part arranged between the side frames of the lower part 11 .
This also applies to the second swivel mounting with swivel axes 13 , 14 and lever arm 22 . In this way almost the entire seat is mounted rocking in the seat lower part, in particular because the lever arms 21 and 22 are oriented pointing towards each other viewed downwards.
the vehicle seat is constantly swinging back within the lower part 11 .
a damping device 24 is arranged on the second swivel bearing whereby the second swivel bearing comprises the lever arm 22 in curved form.
the damper device 24 is advantageously mounted pivoting at a point 25 and allows damping of the swivel movements of the vehicle seat to compensate for the pitching movements of the vehicle.
the damper device 24 is attached with a piston 26 to the curved lever arm 22 .
the lever arms 21 and 22 preferably have first and second swivel axes at their first and second ends 21 a , 21 b , 22 a , 22 b .
the swivel axes may be spaced more from the ends 21 a , 21 b , 22 a and 22 b of the lever arms 21 and 22 .
the rocking motion of the vehicle seat is executed to compensate for the pitching movement of the vehicle on the specified curve or arc shape. This allows targeted control of the swivel movement and hence influencing of a fictitious pivot point or pivot axis about which the vehicle seat is swivelled.
FIG. 4 shows in a perspective view the vehicle seat according to a second embodiment of the invention.
the same and similar components have the same reference numerals.
the vehicle seat differs from the vehicle seat in the first embodiment in that in addition to the side swivel mountings 12 , 13 acting in the longitudinal horizontal direction which are arranged at the ends 11 a and 11 b of the seat lower part 11 , additional swivel mountings are provided on the front and rear walls 27 , 29 of the lower part which act in the vehicle width direction, i.e. the vehicle seat width direction. This allows tipping movements of the vehicle in the lateral direction to be compensated by such a vehicle seat.
swivel mountings which act in the horizontal direction are shown with a swivel axis 33 and a lever arm 34 which are also arranged on an upwardly directed protrusion 32 of the lower part 11 .
FIGS. 5 a , 5 b and 5 c again show in a side view the vehicle seat according to the second embodiment of the invention in various swivel positions which act in the longitudinal direction of the vehicle and the vehicle seat.
the line 17 indicating a Z axis of the vehicle seat and connecting a head 19 with a SIP point 18 (centre of gravity) with a swivel axis 16 has a different orientation in FIGS. 5 a and 5 c from line 20 which indicates a Z axis of the vehicle.
FIG. 5 a the swivel movement of the vehicle seat is shown in relation to the vehicle when the vehicle with its front axle drives through a dip and as a result it executes a swivel movement forwards.
the vehicle seat 4 however with its seat surface 4 a remains in the horizontal so that a deviation occurs between lines 17 and 20 .
FIG. 5 c in contrast the front axle of the vehicle passes over a bump.
the vehicle seat in seat surface 4 a remains in the horizontal, while the vehicle seat lower part 11 undergoes a swivel movement to the rear due to passing over the bump. This is also indicated by comparison of the two lines 17 and 20 .
FIG. 6 shows technical details in a partial cross section view together with a side view of the vehicle seat. It is clear from this depiction that a second swivel axis 30 a , belonging to the swivel mounting for a swivel movement acting in the vehicle width direction or vehicle seat width direction, is also arranged inside an arc-shaped curved track. This also applies to the second swivel axis 30 in the front area of the vehicle seat. Otherwise the same and similar components carry the same reference numerals as the vehicle seat in the first embodiment.
FIG. 7 a shows the vehicle seat according to a second embodiment of the invention in a partial cross section view, in particular in a lower area as indicated by a cross section view along line C-C in FIG. 7 b.
lever arms 39 and 40 present in the same way as in the swivel bearings acting in the longitudinal horizontal direction.
the two levers 39 and 40 are arranged in the known manner by means of swivel axes 45 , 30 and 42 , 41 on the lower part and on components of the vehicle seat upper part.
a damper device 43 is shown with a piston 44 , wherein the piston 44 is also connected with the curved lever arm 39 already described which is swivellable about the swivel axis 30 .
FIGS. 8 a , 8 b and 8 c show the vehicle seat according to a second embodiment of the invention in various swivel positions which act in the vehicle width direction. It is clear from these views again that on a side vehicle deflection to the left, the vehicle seat axis or driver's seat axis 17 shows a deviation in relation to the vehicle axis 20 . Also FIG. 8 c shows that in the opposite direction, the vehicle seat axis 17 is oriented to the left in relation to the vehicle axis 20 by an angle i.e. because of the movement of the vehicle to the right, the vehicle axis 20 is also tilted to the right.
lever arms can also be replaced for example by belts or similar parts.

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Engineering & Computer Science (AREA)
Aviation & Aerospace Engineering (AREA)
Transportation (AREA)
Mechanical Engineering (AREA)
Vibration Prevention Devices (AREA)
Seats For Vehicles (AREA)

US13/312,193 2010-12-08 2011-12-06 Vehicle vibration device for vehicle seats or vehicle cabs Active US9266452B2 (en)

Applications Claiming Priority (3)

Application Number	Priority Date	Filing Date	Title
DE102010053752		2010-12-08
DE102010053752.7		2010-12-08
DE102010053752A DE102010053752A1 (de)	2010-12-08	2010-12-08	Fahrzeugschwingungsvorrichtung für Fahrzeugsitze oder Fahrzeugkabinen

Publications (2)

Publication Number	Publication Date
US20120145875A1 US20120145875A1 (en)	2012-06-14
US9266452B2 true US9266452B2 (en)	2016-02-23

Family

ID=45218432

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
US13/312,193 Active US9266452B2 (en)	2010-12-08	2011-12-06	Vehicle vibration device for vehicle seats or vehicle cabs

Country Status (3)

Country	Link
US (1)	US9266452B2 (de)
EP (1)	EP2463146B1 (de)
DE (1)	DE102010053752A1 (de)

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US10065541B2 (en)	2015-08-10	2018-09-04	Grammer Ag	Horizontal vibration device for a vehicle seat
US10150392B2 (en) *	2016-02-24	2018-12-11	Ayyakannu Mani	Combat vehicle seat installation for protection of occupants from the effects of ground explosions
US20220161702A1 (en) *	2020-11-23	2022-05-26	Seats Incorporated	Bellows for seat assembly

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DE102015121765B4 (de) *	2015-12-14	2022-11-17	Grammer Aktiengesellschaft	Fahrzeugschwingungsvorrichtung
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DE102019134244B4 (de)	2019-12-13	2024-08-01	Grammer Aktiengesellschaft	Fahrzeugsitz mit Scherengestellanordnung
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2010
- 2010-12-08 DE DE102010053752A patent/DE102010053752A1/de not_active Withdrawn
2011
- 2011-12-06 US US13/312,193 patent/US9266452B2/en active Active
- 2011-12-08 EP EP11192650.7A patent/EP2463146B1/de active Active

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